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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 4 — Feb. 15, 2009
  • pp: 497–499

Generation of 15 nJ pulses from a highly efficient, low-cost multipass-cavity Cr 3 + : Li CAF laser

Umit Demirbas, Alphan Sennaroglu, Franz X. Kärtner, and James G. Fujimoto  »View Author Affiliations


Optics Letters, Vol. 34, Issue 4, pp. 497-499 (2009)
http://dx.doi.org/10.1364/OL.34.000497


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Abstract

We describe the generation of enhanced pulse energies using a multipass-cavity (MPC) Cr 3 + : Li CAF laser, pumped by inexpensive, single spatial mode laser diodes. A semiconductor saturable absorber was used for stable mode-locked operation. The MPC reduced the pulse repetition rate to the 10 MHz level, scaling pulse energies and intensities. With only 540 mW of absorbed pump power, 98 fs pulses with energies of 9.9 nJ and peak powers of 101 kW , corresponding to 95 mW of average power at a repetition rate of 9.58 MHz , were generated. By increasing the intracavity negative dispersion, 310 fs pulses with energies of 15.2 nJ and peak powers of 49 kW , corresponding to 160 mW of average power at 10.51 MHz repletion rate, were also generated. These results demonstrate that low-cost MPC Cr 3 + -doped colquiriite lasers can generate pulse energies and intensities comparable to more expensive Ti:sapphire lasers.

© 2009 Optical Society of America

OCIS Codes
(140.3460) Lasers and laser optics : Lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3600) Lasers and laser optics : Lasers, tunable
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 23, 2008
Revised Manuscript: December 28, 2008
Manuscript Accepted: December 30, 2008
Published: February 12, 2009

Citation
Umit Demirbas, Alphan Sennaroglu, Franz X. Kärtner, and James G. Fujimoto, "Generation of 15 nJ pulses from a highly efficient, low-cost multipass-cavity Cr3+:LiCAF laser," Opt. Lett. 34, 497-499 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-4-497


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